My husband and I would be very appreciative if we could find some teens to help keep an eye on our children, just during the speaker sessions. Our seven year old, Mary, is very social and independent and will probably quickly make new friends and find things to play with them; she won't require close supervision. My four year old, Joey, is a little shy at first, but warms up after a little while. Mary and Joey both love Minecraft and we will be bringing along two iPads they can use, and possibly a laptop. I know at the last conference there were several kids playing in an adjoining room, and if that is happening again they would likely happily join in on that. Our two year old, Lily, requires close, constant supervision though, and it would be most helpful to find someone willing to play with her during those times. It is also possible she might nap during afternoon sessions. We would be comfortable having someone (or two, or three!) watch the kids either in our hotel room, or in the adjoining room for kids.
(I'm guessing it's possible that a nearly-teen might work for the next-room play, as the parents would be so near.) A year and a half ago, the family looked like the photo here: http://alwayslearninglive.blogspot.com/2011/12/melissa-yatzecks-family.html
Some newer photos of the kids are here: http://alwayslearninglive.blogspot.com/2011/12/melissa-yatzecks-family.html